Refer to http://www.ntfs.com/ntfs-mft.htm for basic details.
While accessing a drive you may receive a systray warning stating that Windows delayed write failed and $mft folder data is lost.
To quickly rescue your data from further loss, you can perform NT Backup.
To fix the $mft file,
- run chkdsk [disk:] /f /v
- If it doesn’t fix, then
- run file recovery and diagnostic tools provided by disk vendor
- if still they, fail notify the vendor to rescue the data
If data is not critical, you can simply opt for formatting which make the disk afresh.
-Govardhan